CN206208469U - Metal composite blank vacuum leak detecting system - Google Patents

Metal composite blank vacuum leak detecting system Download PDF

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Publication number
CN206208469U
CN206208469U CN201621243614.3U CN201621243614U CN206208469U CN 206208469 U CN206208469 U CN 206208469U CN 201621243614 U CN201621243614 U CN 201621243614U CN 206208469 U CN206208469 U CN 206208469U
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CN
China
Prior art keywords
blank
vacuum
leak
vavuum pump
metal composite
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201621243614.3U
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Chinese (zh)
Inventor
张向丽
王小兵
刘润生
田春亚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAOJI TITANIUM INDUSTRY Co Ltd
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BAOJI TITANIUM INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201621243614.3U priority Critical patent/CN206208469U/en
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Publication of CN206208469U publication Critical patent/CN206208469U/en
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Abstract

The utility model provides a kind of metal composite blank vacuum leak detecting system, for the vacuum leak hunting before the blank rolling of titanium, nickel, stainless steel, steel, including the blank with escaping pipe, the helium gas source with gas spray gun, vavuum pump, mass spectrograph and the vacuum meter that the vavuum pump is connected, the first valve and the connection vavuum pump and mass spectrometric second valve that connect the blank and the vavuum pump, the gas spray gun is connected with the escaping pipe.The beneficial effects of the utility model are:Leak detection sensitivities are high, can detect very small leak source, leak efficiency high, and simple and easy to operate, instrument is quick on the draw, high precision, and is difficult to be disturbed by other gases, suitably put into practical application, work well.

Description

Metal composite blank vacuum leak detecting system
【Technical field】
The utility model is related to metal composite plate blank material leak detection field, and in particular to a kind of metal composite blank vacuum leak hunting System.
【Background technology】
How vacuum rolling field ensures that the high vacuum seal of blank is a key technology.At present, sealing is measured Leak hunting method can be roughly divided into pressurization and vacuum method.Pressurization is the leak detection side inside gases at high pressure feeder Method;Vacuum method is that device is evacuated, and probe gas is blown or is coated on by test object, by flowing into vacuum plant Interior probe gas finds out leak source.
With reference to the leak hunting method of heat exchanger, conventional has:1st, range estimation leak detection, simple and easy to do, does not have cost, but have very big Defect, only big leak source, the place of usual seepage is very trickle, is visually hardly visible.2nd, suds leak detection, after drilling first The argon gas of certain pressure is passed through, then soap is thinly sliced, leaching is stirred continuously dissolves it in the hot water, and suds are after cooling Stiff shape, lurid solution are condensed into, blank commissure is applied to, the place for having leak source has bubble to emerge, the method letter Easy row, has been applied in actual production, is domestic generally by the way of.
Therefore, it is necessary to provide a kind of new metal composite blank vacuum leak detecting system.
【Utility model content】
The purpose of this utility model be provide it is a kind of imitate accurately, lossless practical metal composite blank vacuum leak hunting system System, the purpose of the method is to ensure blank inside high vacuum air-tightness, it is ensured that the composite plate for rolling out possesses combination higher Intensity.
The technical solution of the utility model is as follows:A kind of metal composite blank vacuum leak detecting system, for titanium, nickel, stainless Steel, steel blank rolling before vacuum leak hunting, including the blank with escaping pipe, the helium gas source with gas spray gun, vavuum pump, Mass spectrograph and the vacuum meter that the vavuum pump is connected, the first valve for connecting the blank and the vavuum pump and connection are described Vavuum pump and mass spectrometric second valve, the gas spray gun are connected with the escaping pipe.
Preferably, the vavuum pump passes sequentially through reducer union, bellows, packing ring and clips and connects with the mass spectrograph Connect.
Preferably, the mass spectrograph is PHOENI XL300 helium mass analyzers.
The beneficial effects of the utility model are:
1st, leak detection sensitivities are high, can detect very small leak source, leak efficiency high, and simple and easy to operate, instrument is quick on the draw, High precision, and be difficult to be disturbed by other gases, suitably put into practical application, work well.
2nd, the reaction time is short, can improve operating efficiency.
3rd, can position, quantify, the position of leak source can not only be found out, moreover it is possible to determine the size of leak rate.
4th, energy indestructive leakage-check, does not make blank be damaged and pollute.
5th, probe gas is nontoxic, not etching part.
【Brief description of the drawings】
Fig. 1 is the structure chart of the utility model metal composite blank vacuum leak detecting system.
【Specific embodiment】
With reference to implementation method, the utility model is described in further detail.
The vacuum inspection that the metal composite blank vacuum leak detecting system is used for before the blank rolling of titanium, nickel, stainless steel, steel Leakage, including the blank 1 with escaping pipe, the helium gas source 2 with gas spray gun, vavuum pump 3, mass spectrograph 4 and the vavuum pump 3 First valve 5 of the vacuum meter 7 of connection, the escaping pipe for connecting the blank 1 and the vavuum pump 3 and connect the vavuum pump 3 With the second valve 6 of the mass spectrograph 4.
The mass spectrograph 4 is PHOENI XL300 helium mass analyzers.
The method of work of the metal composite blank vacuum leak detecting system, comprises the following steps:
The vavuum pump 3 passes sequentially through reducer union, bellows, packing ring and clips and is connected with the mass spectrograph 4.
Step one, the vavuum pump 3 and the outlet mouth of pipe are connected, taken out in advance to carrying out vacuum inside the blank 1, and Observe the reading of vacuum meter 7 of the vavuum pump 3;
Step 2, the vavuum pump 3 is connected with the mass spectrograph 4;Specifically, the vavuum pump 3 and the mass spectrograph 4 Pass sequentially through the connection of reducer union, bellows, packing ring and clips;
Step 3, as vacuum≤0.1Pa, the mass spectrograph 4 is opened, using spray gun by the helium of purity 99.999% Spray in welded joints paragraph by paragraph, and observe the change of the reading of vacuum meter 7;Before the mass spectrograph 4 is started, the vavuum pump 3 must be fastened Air valve, it is ensured that the vacuum in mass spectrum chamber, after pending data is steady, opens valve, detection data;
Step 4, drastically change or show when the vacuum values of the mass spectrograph 4 >=10-9 grades when, show at the detection There is leak source and marked;
Step 5, using the gas spray gun to leak source repair welding after, it is qualified to the blank 1 to hunt leak again.
Specifically, when carrying out vacuum and taking out in advance, first valve 5 keeps clear, and observes vacuum meter reading.
The vavuum pump 3 fastens the second valve 6 when being connected with mass spectrograph 4, as vacuum≤0.1Pa, carry out weld joint close The detection of envelope property.
Mass spectrograph 4 is opened, the second valve 6 is opened after vacuum values are steady, now mass spectrograph 4 is connected with vavuum pump 3, Pumping operation is carried out to blank 1 simultaneously, probe gas is sprayed in welded joints paragraph by paragraph, examine the change of leak detector vacuum degrees of data Change.
Helium first is sprayed with spray gun to the place (such as seal nipple, bellows, packing ring) that there may be leak source, it is ensured that connecting portion Position air-tightness is good, it is to avoid complex component inside gas leakage, then blank weld seam is hunted leak.If there is leak source in blank somewhere, when helium spray When on to leak source, helium can be inhaled into vacuum system immediately, and so as to be diffused into mass spectrum chamber, the data of helium mass spectrometer leak detector are just Can change immediately.Be should be noted that when using:Helium is lighter inert gas, can be risen automatically after ejection, in order to accurate Spray helium in leak source position, should from top to bottom, by closely to remote (with respect to leak detector position), because when below surfacing being stitched during spray helium Helium is possible to be sucked by top leak source, is difficult to determine the position of leak source, furthermore, leak source leak detector with a distance from mass spectrum chamber is anti- It is also different between seasonable, so spray helium should be first since near the side of leak detector by closely to far carrying out.To the place for having leak source, will It is marked.The leak source vacuum available sealing clay that has found temporarily is closed and the method such as carrys out, and leak source is detected one by one.Surrounding weld seam has been hunted leak Cheng Hou, using argon arc welding and mild steel weldinmg rod by leak source repair welding, it is qualified that leak source is hunted leak again.
After the completion of detection, vavuum pump air valve is fastened, intercept the rough vacuum that air ensures mass spectrum chamber, press stop keys, close gas Atmospheric valve is closed in town, emptying, closes detector.
In sum, the high vacuum air-tightness of blank is vacuum rolling field important technical problem to be solved.This Utility model uses vacuum method, using helium as probe gas, detection leakage is changed by the vacuum value of magnetic deflection mass spectrometer Point range, the instrumental sensitivity reaches 10-9Pa.L/s, repairing leak source that can be accurate and effective.
Above-described is only implementation method of the present utility model, it should be noted here that for the ordinary skill of this area For personnel, on the premise of the utility model creation design is not departed from, improvement can also be made, but these belong to this practicality New protection domain.

Claims (3)

1. a kind of metal composite blank vacuum leak detecting system, for the vacuum leak hunting before the blank rolling of titanium, nickel, stainless steel, steel, It is characterised in that it includes the blank with escaping pipe, the helium gas source with gas spray gun, vavuum pump, mass spectrograph and the vacuum The vacuum meter of pump connection, the first valve for connecting the blank and the vavuum pump and connect the vavuum pump and the mass spectrograph The second valve, the gas spray gun connects with the escaping pipe.
2. metal composite blank vacuum leak detecting system according to claim 1, it is characterised in that:The vavuum pump with it is described Mass spectrograph passes sequentially through the connection of reducer union, bellows, packing ring and clips.
3. metal composite blank vacuum leak detecting system according to claim 1, it is characterised in that:The mass spectrograph is PHOENIXL300 helium mass analyzers.
CN201621243614.3U 2016-11-16 2016-11-16 Metal composite blank vacuum leak detecting system Active CN206208469U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621243614.3U CN206208469U (en) 2016-11-16 2016-11-16 Metal composite blank vacuum leak detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621243614.3U CN206208469U (en) 2016-11-16 2016-11-16 Metal composite blank vacuum leak detecting system

Publications (1)

Publication Number Publication Date
CN206208469U true CN206208469U (en) 2017-05-31

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Application Number Title Priority Date Filing Date
CN201621243614.3U Active CN206208469U (en) 2016-11-16 2016-11-16 Metal composite blank vacuum leak detecting system

Country Status (1)

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CN (1) CN206208469U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323816A (en) * 2017-07-31 2019-02-12 深圳市远望工业自动化设备有限公司 Mass spectrum leak detection equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323816A (en) * 2017-07-31 2019-02-12 深圳市远望工业自动化设备有限公司 Mass spectrum leak detection equipment

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